Valve refacing and grinding tool



' J. A.v FUSHS. VALVE REFACING AND GRINDING TOOL.

APPLICATION FILED MAY 19 13309976, v l I Patented 0515.3, 1922.

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Patented fact. 3, infill.

JOSEPH A. FUSE-IS, OF RIGHT/TONI), INDIANA.

VALVE REFACING AND GRINDING TOOL.

Application filed May 19,

To all whom it may concern:

Be it known that I, Josnrn Fnsris, the above-named petitioner, a citizen of the United States of America, and a resident of Richmond, in the county of WVayne and State of Indiana, have invented new and useful Improvements in Valve Refacing and Grinding Tools, of which the following is a full, clear, and comprehensive specification and exposition, the same being such as will enable others to make and use the same with exactitude.

The object of my present invention, broadly speaking, is to provide valve refacing and grinding tools which will be strong and durable in construction, simple in character, easily operated and controlled, efficient in practice, and which can be manufactured and sold at a comparatively low price.

More specifically stated my object is to provide a combination tool for refacing valves of automobile motors, for refacing the valve seats thereof for grinding in the valves With relation to the valve'seat, and for accomplishing various other minor objects and results incident to said parts.

Other minor objects and particular advantages ofthe invention will present themselves in the course of the following description, and that which is new will suggest themselves in the course of the following description.

The preferred means for carrying out the objects of my invention in a practical manner is shown in the accompanying drawings, in whichi i gure 1. is a vertical central section showing a portion of my tool in operative position as employed in grinding in the valve with the valve-seat. Figure 2 is a top plan view of the hand-knob for operating the tool. Figure 3 is a vertical central section showing my tool as employed in refacing the valve. Figure 4: is a top plan view of the refacing block alone. Figure 5 is a plan view of a portion of emery cloth or mat, or other abradant material as used in my tool. Figure 6 is a vertical central section showing the parts as employed in refacing the valve seat.

Similar indices denote like parts through out the several views.

In order that the construction, the operation, and the advantages of my invention.

1921. Serial no. 471,025.

may be better understood and appreciated I will now take up a detailed description thereof in which I will set forth. the invention as fully and as comprehensively as I may. 7

Referring now to the drawings in concrete detail:

Letter A denotes that portion of an internal combustion motor which has a cavity B therein, with an angular valve-seat therearound at its upper edge, and with a stemaperture C leading down centrally therefrom as in Fig. 6. Letter D denotes the disc-like valvehead having a peripheral face adapted to'contact with said valve-seat. Said head D has a stem E concentric thereof and extending down therefrom. and adapted to slidably lit the aperture C.

My invention proper comprises the head 1, which in this instance has the two studs 2 and 3 projectin down from the underside thereof to engage in corresponding cavities formed in the upper surface of the valvehead D, however other means may be employed for connecting the head 1 with the valve-head D depending on the particular make of motor to be operated upon.

Projecting up centrally from the head 1 is the stem 4-, whose upper portion, especially, is formed square in cross section and also formed tapering in order that it will fit snugly in the central aperture of the knob- 5 which forms a hand-hold for rotating the same, or an ordinary brace may be employed in place thereof.-

The grinding and refacing block coinprises the body portion 6, round in cross section, and having a central cavity 7 therein. Said block also has a central aperture 8 formed therethrough.

The upper surface of said block is formed concave or female, in order to provide a downwardly and inwardly converging face 9, with a slot 10 cut across said face at one side to receive and hold the ends of the abradant-mat 11, shown in Fig. 5.

The lower portion of said block is provided with a peripheral bevel or face 12. Also a slot 13 is cut across the face 12, at one side thereof, to receive and hold the ends of an abradantmat, similar to the mat 11 shownin Fig. 5.

The lower portion of the block is also provided with two vertical faces 14: and 15 which are parallel with each other to receive Lia the jaws of a vise or the like whereby the block may be securely held when in use, as hereinafter will be made clear.

As has been intimated there are several desirable results to be obtained with the use of my invention, namely: (a) Grinding the contact tace of the valve D, Fig. 3. (7)) Grinding the contact face of the valve seat in the part A, Fig. 6. And (0) Grinding in the valve D with the seat, as in Fig. 1.

As is clearly shown the device consists essentially of but three main parts: (a) The ret'acing block 6 and the parts integral therewithl (h) The driver, including the stem 4- and the parts which are integral therewith. And the knob or hand-hold 5.

In practice when it is desired to grind the .tace of the valve D the block should be secured in a vise with the jaws of the vise clamping upon the faces 14 and 15 to hold the block secure. The abradant inat 11 is secured on the face 9 with its ends secured in the slot 10.

The valve'heing removed from its motor, then the stern E is inserted into the aperture 8 where it acts as a guide to bring the "face of the valve D fiat upon the abradant 11, as in Fig. 3.

The driver is now placed in operative position with the studs 2 and 8 inserted in sockets in the valve-head; and the knob 5 is then placed in position on the stern Now by grasping the knob 5 it is evident that one may rotate the valve alternately to the right and the left, thereby grinding the valve face upon the abradant 11.

In rinding the valve seat (as in Fig. 6) the abradant met 11 is secured on the face 12, with the ends of the mat secured in the slot 13. Now by grasping the block 6 with ones hand and rotating the same it is evident that the abradant will grind the face of the valve seat in the part A but in this operation the valve l) and its stein E must be in position in 3 to act as a guide tor the block (3.

Jitter both the tar-col the valve and the valve seat have been around then it is usual ly necessary that the two should be ground together, for which purpose the valve stem E is inserted into the aperture 0 and the face of the valve 1) is permitted to contact with the valve seat, as shown in Fig. 1. The driver is then connected with the valve head as shown, and the knob 5 is connected with the stern of the driver, after which. by rotat ing the knob it is evident that the valve face and the valve seat will be ground together into an absolute gas-tight joint.

It is to be understood that in place of the knob 5 a brace or other tool may be employed for rotating the driver.

It is also to be understood that other chan es may be made in the details of con struction and in the operation thereof without departing from the spirit of the invention and without sacrificing any of the advantages thereof.

Having now fully shown and described my invention, what I claim and desire to secure by Letters Patent, is

A valve retacing and grinding; tool comprising: a block including a body portion which is round in cross section and having: a central cavity therein with a central aperture therethrough. the upper surtace cl" said block being; formed concave to provide a downwardly and inwardly converging face with a slot cut across said face at one side, an abradant-niat on said face with its ends secured in said slot, the lower portion of said block being provided with a bevel face with a slot formed across one side thereof. a second aln-adant-Inat on said lower face and having its ends secured in said slot in the lower face, all substantially as shown and described.

In testimony whereof I have hereunto subscribed my name to this specification in the presence of two subscribing: witnesses.

JOSEPH A. FUSES.

Witnesses ll om. 

